We report the precise control of tunneling magnetoresistance (TMR) in devices of self-assembled core/shell Fe3O4/Co1−xZnxFe2O4 nanoparticles (0≤x≤1). Adjusting the magnetic anisotropy through the content of Co2+ in the shell, provides an accurate tool to control the switching field between the bistable states of the TMR. In this way, different combinations of soft/hard and hard/soft core/shell configurations can be envisaged for optimizing devices with the required magnetotransport response.
@article{arxiv.2005.10771,
title = {Tunnel Magnetoresistance in Self-Assemblies of Exchange Coupled Core/Shell Nanoparticles},
author = {Fernando Fabris and Enio Lima and Cynthia Quinteros and Lucas Nener and Mara Granada and Martín Sirena and Roberto D. Zysler and Horacio E. Troiani and Víctor Leborán and Francisco Rivadulla and Elin L. Winkler},
journal= {arXiv preprint arXiv:2005.10771},
year = {2020}
}